Properties

Label 120.144.3-60.d.1.1
Level $120$
Index $144$
Genus $3$
Cusps $8$
$\Q$-cusps $4$

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Invariants

Level: $120$ $\SL_2$-level: $20$ Newform level: $1800$
Index: $144$ $\PSL_2$-index:$72$
Genus: $3 = 1 + \frac{ 72 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 8 }{2}$
Cusps: $8$ (of which $4$ are rational) Cusp widths $2^{2}\cdot4^{2}\cdot10^{2}\cdot20^{2}$ Cusp orbits $1^{4}\cdot2^{2}$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $2 \le \gamma \le 3$
$\overline{\Q}$-gonality: $2 \le \gamma \le 3$
Rational cusps: $4$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 20J3

Level structure

$\GL_2(\Z/120\Z)$-generators: $\begin{bmatrix}23&100\\0&31\end{bmatrix}$, $\begin{bmatrix}31&100\\74&7\end{bmatrix}$, $\begin{bmatrix}59&40\\86&21\end{bmatrix}$, $\begin{bmatrix}99&10\\22&81\end{bmatrix}$, $\begin{bmatrix}107&90\\74&97\end{bmatrix}$, $\begin{bmatrix}113&70\\6&7\end{bmatrix}$
Contains $-I$: no $\quad$ (see 60.72.3.d.1 for the level structure with $-I$)
Cyclic 120-isogeny field degree: $16$
Cyclic 120-torsion field degree: $512$
Full 120-torsion field degree: $245760$

Models

Embedded model Embedded model in $\mathbb{P}^{4}$

$ 0 $ $=$ $ x z w + x z t + y z t $
$=$ $x w t + x t^{2} + y t^{2}$
$=$ $x w^{2} + x w t + y w t$
$=$ $x^{2} w + x^{2} t + x y t$
$=$$\cdots$
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Singular plane model Singular plane model

$ 0 $ $=$ $ x^{4} y - x^{2} y^{2} z - 60 x^{2} y z^{2} - 1125 x^{2} z^{3} + 225 y z^{4} $
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Weierstrass model Weierstrass model

$ y^{2} + \left(x^{4} + 1\right) y $ $=$ $ -30x^{6} - 113x^{4} - 6750x^{2} + 12656 $
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Rational points

This modular curve has 4 rational cusps but no known non-cuspidal rational points. The following are the coordinates of the rational cusps on this modular curve.

Embedded model
$(0:0:0:0:1)$, $(0:0:1:0:0)$, $(1:-1:1:0:0)$, $(0:1:0:0:0)$

Maps to other modular curves

$j$-invariant map of degree 72 from the embedded model of this modular curve to the modular curve $X(1)$ :

$\displaystyle j$ $=$ $\displaystyle -\frac{1}{5}\cdot\frac{64000000000xt^{10}-949218750000y^{11}+1961718750000y^{9}w^{2}-10125000000000y^{9}wt+39905156250000y^{9}t^{2}-56948906250000y^{7}w^{2}t^{2}+18849003750000y^{7}wt^{3}-138087261000000y^{7}t^{4}+47353653000000y^{5}w^{2}t^{4}+177399860310000y^{5}wt^{5}-195015764862000y^{5}t^{6}+171877660422000y^{3}w^{2}t^{6}+169421819486640y^{3}wt^{7}+83735364541200y^{3}t^{8}-36911953125000yz^{8}t^{2}+154522856250000yz^{6}t^{4}+239040778860000yz^{4}t^{6}-25136671834320yz^{2}t^{8}-36209565794320yw^{2}t^{8}-25599690229024ywt^{9}-12342455023184yt^{10}+533935546875z^{11}+181933593750z^{9}w^{2}+4809375000000z^{9}wt+4867910156250z^{9}t^{2}+11094890625000z^{7}w^{2}t^{2}+11384516250000z^{7}wt^{3}+38660392125000z^{7}t^{4}+13133738250000z^{5}w^{2}t^{4}+2736117360000z^{5}wt^{5}+1478592198000z^{5}t^{6}+16693837164000z^{3}w^{2}t^{6}+16026284969040z^{3}wt^{7}+3244710686880z^{3}t^{8}-1017766258688zw^{2}t^{8}-7986719962624zwt^{9}-6203086886592zt^{10}}{t(2531250000y^{9}w-10631250000y^{9}t+6986250000y^{7}w^{2}t+14249250000y^{7}wt^{2}-9710550000y^{7}t^{3}+8627670000y^{5}w^{2}t^{3}+10834812000y^{5}wt^{4}+5837958000y^{5}t^{5}+309861360y^{3}w^{2}t^{5}+69289200y^{3}wt^{6}-2694782880y^{3}t^{7}+9175781250yz^{8}t+13655671875yz^{6}t^{3}-72159750yz^{4}t^{5}+2377521600yz^{2}t^{7}+1319822512yw^{2}t^{7}+920182992ywt^{8}+521386528yt^{9}-1423828125z^{9}w-1455468750z^{9}t+2071406250z^{7}w^{2}t+2107687500z^{7}wt^{2}-1558237500z^{7}t^{3}+789710625z^{5}w^{2}t^{3}+1504607625z^{5}wt^{4}+271180125z^{5}t^{5}-81111390z^{3}w^{2}t^{5}-36548580z^{3}wt^{6}+15671070z^{3}t^{7}+155474736zw^{2}t^{7}+422396064zwt^{8}+260693264zt^{9})}$

Map of degree 1 from the embedded model of this modular curve to the plane model of the modular curve 60.72.3.d.1 :

$\displaystyle X$ $=$ $\displaystyle x$
$\displaystyle Y$ $=$ $\displaystyle 5w$
$\displaystyle Z$ $=$ $\displaystyle \frac{1}{15}t$

Equation of the image curve:

$0$ $=$ $ X^{4}Y-X^{2}Y^{2}Z-60X^{2}YZ^{2}-1125X^{2}Z^{3}+225YZ^{4} $

Map of degree 1 from the embedded model of this modular curve to the Weierstrass model of the modular curve 60.72.3.d.1 :

$\displaystyle X$ $=$ $\displaystyle -t$
$\displaystyle Y$ $=$ $\displaystyle 112x^{4}-75x^{2}wt-30x^{2}t^{2}$
$\displaystyle Z$ $=$ $\displaystyle x$

Modular covers

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
40.72.1-10.a.1.1 $40$ $2$ $2$ $1$ $0$
120.24.0-60.b.1.4 $120$ $6$ $6$ $0$ $?$
120.72.1-10.a.1.4 $120$ $2$ $2$ $1$ $?$

This modular curve is minimally covered by the modular curves in the database listed below.

Covering curve Level Index Degree Genus
120.288.5-60.bl.1.8 $120$ $2$ $2$ $5$
120.288.5-60.bl.2.7 $120$ $2$ $2$ $5$
120.288.5-60.bn.1.1 $120$ $2$ $2$ $5$
120.288.5-60.bn.2.2 $120$ $2$ $2$ $5$
120.288.5-60.bt.1.1 $120$ $2$ $2$ $5$
120.288.5-60.bt.2.2 $120$ $2$ $2$ $5$
120.288.5-60.bv.1.1 $120$ $2$ $2$ $5$
120.288.5-60.bv.2.2 $120$ $2$ $2$ $5$
120.288.5-120.ei.1.2 $120$ $2$ $2$ $5$
120.288.5-120.ei.2.4 $120$ $2$ $2$ $5$
120.288.5-120.eo.1.8 $120$ $2$ $2$ $5$
120.288.5-120.eo.2.6 $120$ $2$ $2$ $5$
120.288.5-120.fg.1.6 $120$ $2$ $2$ $5$
120.288.5-120.fg.2.2 $120$ $2$ $2$ $5$
120.288.5-120.fm.1.4 $120$ $2$ $2$ $5$
120.288.5-120.fm.2.8 $120$ $2$ $2$ $5$
120.288.7-60.z.1.4 $120$ $2$ $2$ $7$
120.288.7-60.z.1.7 $120$ $2$ $2$ $7$
120.288.7-60.ba.1.18 $120$ $2$ $2$ $7$
120.288.7-60.ba.1.60 $120$ $2$ $2$ $7$
120.288.7-60.bc.1.4 $120$ $2$ $2$ $7$
120.288.7-60.bc.1.11 $120$ $2$ $2$ $7$
120.288.7-60.bd.1.3 $120$ $2$ $2$ $7$
120.288.7-60.bd.1.12 $120$ $2$ $2$ $7$
120.288.7-120.eh.1.7 $120$ $2$ $2$ $7$
120.288.7-120.eh.1.24 $120$ $2$ $2$ $7$
120.288.7-120.ek.1.7 $120$ $2$ $2$ $7$
120.288.7-120.ek.1.24 $120$ $2$ $2$ $7$
120.288.7-120.eq.1.8 $120$ $2$ $2$ $7$
120.288.7-120.eq.1.23 $120$ $2$ $2$ $7$
120.288.7-120.et.1.8 $120$ $2$ $2$ $7$
120.288.7-120.et.1.23 $120$ $2$ $2$ $7$
120.288.7-60.ev.1.1 $120$ $2$ $2$ $7$
120.288.7-60.ev.1.10 $120$ $2$ $2$ $7$
120.288.7-60.ev.2.1 $120$ $2$ $2$ $7$
120.288.7-60.ev.2.6 $120$ $2$ $2$ $7$
120.288.7-60.ew.1.1 $120$ $2$ $2$ $7$
120.288.7-60.ew.1.10 $120$ $2$ $2$ $7$
120.288.7-60.ew.2.1 $120$ $2$ $2$ $7$
120.288.7-60.ew.2.6 $120$ $2$ $2$ $7$
120.288.7-120.bdt.1.5 $120$ $2$ $2$ $7$
120.288.7-120.bdt.1.14 $120$ $2$ $2$ $7$
120.288.7-120.bdt.2.9 $120$ $2$ $2$ $7$
120.288.7-120.bdt.2.12 $120$ $2$ $2$ $7$
120.288.7-120.bdw.1.7 $120$ $2$ $2$ $7$
120.288.7-120.bdw.1.13 $120$ $2$ $2$ $7$
120.288.7-120.bdw.2.10 $120$ $2$ $2$ $7$
120.288.7-120.bdw.2.13 $120$ $2$ $2$ $7$
120.432.15-60.h.1.3 $120$ $3$ $3$ $15$